html{
	height: 100%;
}
body{
	/*height: 100%;*/
	/*background-image: url(../img/bg1.jpg);*/
	background-position: center;
	background-repeat: no-repeat;
	background-size:   auto 100%;
}
header{
	font-size: 13px;
}
.main{
	height: 100%;
}
.top_nav{
	padding: 0 40px;
	background-color: #22CB64;
	height: 100px;
}
.cs_icon_btn{
	/*background-image: url(../img/sun_icon.png);*/
	width: 100px;
	height: 100px;
	padding-top: 0px;
	background-position: center;
	background-repeat: no-repeat;
	background-size: 60%;
	text-align: center;
	font-size: 13px;
	color: #dfdfdf;
}
.cs_icon_btn img{
	display: block;
	margin-left: 20px;
	margin-bottom: 5px;
	width: 60px;
	height: 60px;
}
.cs_icon_btn:hover{
	color: #fff;
	background:-webkit-gradient(linear, 0 0, 0 bottom, from(rgba(229,206,121,0.1)), to(rgba(28,152,75, 0.5)));
	cursor:pointer
}
